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6. Element most likely to form an acidic oxide is C .
C has atomic number 17 and element is chlorine and rest are metals and chlorine is a non metal and non metals are located at right side of periodic table and form acidic oxides.D is a noble gas element.
7. Correct answer: (c) Q and R
Explanation: The atomic number of sodium=11. Therefore, P is sodium. Sodium is a metal.The atomic number of phosphorus = 15. Therefore, element Q is phosphorus. It is a nonmetal as it requires 3 electrons to complete its octet.
8. C) Uterus
If one of the sperm cells penetrates the egg, the egg is fertilized and begins developing. The egg takes several days to travel down the fallopian tube into the uterus. After it is in the uterus, a fertilized egg usually attaches to (implants in) the lining of the uterus (endometrium).
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. ... Cells have many parts, each with a different function.
Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. ... In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.